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Finding the Fourth Proportional to 25,926.80, 38,889.96 and 8,158.72

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Solution

The fourth proportional to 25,926.80, 38,889.96 and 8,158.72 is: 12,238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,926.80 : 38,889.96 = 8,158.72 : x
  2. Step 2: Convert to fraction form
    25,926.80/38,889.96 = 8,158.72/x
  3. Step 3: Cross multiply
    25,926.80x = 38,889.96 × 8,158.72
  4. Step 4: Simplify right side
    25,926.80x = 317,292,294.45
  5. Step 5: Solve for x
    x = 317,292,294.45/25,926.80
  6. Step 6: Final answer
    x = 12,238.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.